A curtain casing is a long narrow channel that holds a curtain rod at the top edge of your curtain panel. Sewing the curtain casing by hand or with a sewing machine is not complicated and requires no special sewing skills. By adding a casing, and possibly a hem to provide the proper length to fit the window, you can transform a sheet, tablecloth or bedspread into a curtain panel that will drape evenly from your rod.
1 Measure the width of the window with a tape measure. A single curtain panel that opens on the side is usually 1 and 1/2 times the width of the window. Measure the thickness of your curtain rod to determine the height of the curtain casing.
2 Fold the top edge of fabric curtain panel 1/2 inch to the wrong side of the fabric. Pin the fabric in place. Press the fold in place with an iron. Remove the pins.
3 Fold the top edge of fabric curtain panel at least 2 inches to the wrong side to create the curtain casing, depending on the thickness of the curtain rod. Pin and press the fold in place with an iron.
4 Sew the casing along the bottom edge of the folded section with a straight stitch, using a sewing machine or a needle and thread. Remove the pins.